url_rewrite_timeout directive

url_rewrite_timeout directive

This patch adds the url_rewrite_timeout directive.

When configured, Squid keeps track of active requests and treats timed out
requests to redirector as failed requests.

url_rewrite_timeout format:

  url_rewrite_timeout timeout time-units on_timeout=<fail|bypass|retry|use_configured_response> [response=<quoted-string>]

The url_rewrite_timeout directive can accept the on_timeout argument to allow
user configure the action when the helper request times out.
The available actions are:

     fail: squid return a ERR_GATEWAY_FAILURE error page
     bypass: the url is not rewritten.
     retry: retry the request to helper
     use_configured_response: use a response which can be configured using the
         the response= option

Example usage:
    url_rewrite_timeout 30 seconds \
        on_timeout=use_configured_response \
        response="OK url=http://example.com/support"

This is a Measurement Factory project